public class FileSystem {
    //磁盘抽象
    private Disk disk;
    //打开文件表
    private FCB[] openFCBTable;
    //空闲磁盘块
    private DiskBlock freeSpaceList;

    public File createFile(File father,int size,String fileName){
        File newFile = new File(fileName,size,true,father);
        father.addNewSonFile(newFile);
        return newFile;
    }
}
